. >> breaking news in the lance armstrong doping saga. armstrong has confessed that he used performance enhancing drugs during his cycling career. a source with knowledge of the situation says the admition came during the taping of an interview with oprah winfrey. armstrong was apparently emotional at times while confessing. he's been accused of using performance enhancing drugs while winning a record 7 tour de france titles. before the interview, armstrong apologized to staff at his livestrong cancer fighting foundation. armstrong was stripped of all seven tour titles last year in the wake of a voluminous u.s. anti-doping agency report the interview will air thursday on oprah winfrey's network. we'll stay on top of this developing story. >> a developing story tonight. the newest search for victims of the speed freak killers. is now in its second week. this duo carried out a drug- fueled killing spree in the 1980's and 90's. this year, the f.b.i. has started the digging for victim remains in the case. joining us now, kron4's j-r stone. jr